package STO_27;

import LCommon.TreeNode;

public class Solution {
	public TreeNode mirrorTree(TreeNode root) {
        if(root==null){
            return root;
        }
        TreeNode left = mirrorTree(root.left);
        TreeNode right = mirrorTree(root.right);
        root.left =right  ;
        root.right = left;
        return root;
    }
}
